import {login, logout, getInfo} from '@/api/user'
/*@/是运行环境中定义的一个别名 @/ 就是src/*/
import {getToken, setToken, removeToken} from '@/utils/auth'
import {resetRouter} from '@/router'

const getDefaultState = () => {
  return {
    token: getToken(),
    name: '',
    avatar: ''
  }
}

const state = getDefaultState()

const mutations = {
  RESET_STATE: (state) => {
    Object.assign(state, getDefaultState())
  },
  SET_TOKEN: (state, token) => {
    state.token = token
  },
  SET_NAME: (state, name) => {
    state.name = name
  },
  SET_AVATAR: (state, avatar) => {
    state.avatar = avatar
  }
}

const actions = {
  // user login
  login({commit}, userInfo) {
    const {username, password} = userInfo
    return new Promise((resolve, reject) => {
      login({username: username.trim(), password: password}).then(response => {
        // 把返回的response用一个data对象存储了
        const {data} = response
      //设置了一个参数叫做SET_TOKEN的参数。值是token
        commit('SET_TOKEN', data.token)
        /**
         * 设置本地的token
         */
        setToken(data.token)
        /**
         * 设置成功 让你通过
         */
        resolve()
      }).catch(error => {
        //没有设置成功就拒绝
        reject(error)
      })
    })
  },
  // get user info
  getInfo({commit, state}) {
    return new Promise((resolve, reject) => {
      getInfo(state.token).then(response => {
        const {data} = response

        if (!data) {
          return reject('Verification failed, please Login again.')
        }

        const {name, avatar} = data

        commit('SET_NAME', name)
        commit('SET_AVATAR', avatar)
        resolve(data)
      }).catch(error => {
        reject(error)
      })
    })
  },

  // user logout
  logout({commit, state}) {
    return new Promise((resolve, reject) => {
      logout(state.token).then(() => {
        removeToken() // must remove  token  first
        resetRouter()
        commit('RESET_STATE')
        resolve()
      }).catch(error => {
        reject(error)
      })
    })
  },

  // remove token
  resetToken({commit}) {
    return new Promise(resolve => {
      removeToken() // must remove  token  first
      commit('RESET_STATE')
      resolve()
    })
  }
}

export default {
  namespaced: true,
  state,
  mutations,
  actions
}

